The summoner name or tag is incorrect
meowmain #4120
SILVER I
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Match History for Patch: 16.10.1
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Champion Stats for Patch: 16.10.1
Champion Mastery
lvl: 56
582,568
lvl: 47
492,086
lvl: 44
457,413
lvl: 30
298,299
lvl: 19
178,745
lvl: 16
144,700
lvl: 15
139,229
lvl: 12
105,626
lvl: 12
104,392
lvl: 11
96,195
lvl: 9
65,611
lvl: 8
61,676